Ramon Castroviejo  (1904 - 1986) Spanish ophthalmologist.

Castroviejo was born in Logrono, Spain. He obtained his medical school degree in Madrid and later studied in the Mayo Clinic in USA. He was interested in keratoplasty which at the time had a high failure rate. He later settled in New York where he carried out research to perfectthe techniques of keratoplasty and became the first surgeon in the world to perform successful penetrating keratoplasty which was a rectangular graft (insert). He invented many ophthalmic surgical instruments which are named after him such as Castroviejo scissors, forceps, needle holder (insert), typing forceps, calipers and corneoslceral punch.He  was voted by over 33,000 ophthalmologists in 1999 as one of the  10 most influential ophthalmologists in th e 20th century (the rest were Don Gass, José I. Barraquer, Ramon Castroviejo, Stewart Duke-Elder, Charles D.Kelman, A.Edward Maumenee, Marshall M.Parks, Harold Ridley, Charles L. Schepens and Lorenz E. Zimmerman) 
For more ophthalmic eponyms visit the Doyne Hall of Fame.